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This Month's
New Digital Diamond Dossier
First to Launch in 2023
German Topaz, Emerald from Habachtal Part II, and 2022 Tucson Report
READ MORE明升体育app_明升体育-官网 Diamond Origin: A Program That Makes a 明升体育app_明升体育-官网
Learn 明升体育app_明升体育-官网Unearth Your Career Potential with a 明升体育app_明升体育-官网 Education
Apply Today明升体育app_明升体育-官网 iD100 Gem Testing Device: Full Disclosure at Your Fingertips
Learn 明升体育app_明升体育-官网Blue Zircon Reportedly from Malawi
A reported new source of blue zircon in Malawi yields rough material for beautiful finished stones in the gem trade.
明升体育app_明升体育-官网 Knowledge Sessions
Engage in webinars on the most diverse and pressing issues in gemology today, including gemstone origin, laboratory-grown stones and new discoveries in field gemology.
Chondrodite in Red Spinel from Mogok, Myanmar
The Bangkok lab recently encountered a single round crystal of chondrodite in red spinel, a possible indicator of Burmese origin.
Two Antique Mughal Spectacles with Gemstone Lenses
Unique diamond and emerald-lensed spectacles from the Mughal Empire were tested in 明升体育app_明升体育-官网’s New York laboratory.
明升体育app_明升体育-官网ed Stones from the Deep
The first installment of this column discusses the formation of colored stones from the crust-mantle transition and below.
Radioactive Green Diamond
The Carlsbad lab recently encountered a 2.42 ct green diamond showing signs of radiation treatment by the use of radioactive salts.
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